Anal columns (Columns of Morgagni or less commonly Morgagni's columns) are a number of vertical folds, produced by an infolding of the mucous membrane and some of the muscular tissue in the upper half of the lumen of the anal canal.

They are named after Giovanni Battista Morgagni, who has several other eponyms named after him.

This article incorporates text in the public domain from page 1185 of the 20th edition of Gray's Anatomy (1918)

This human digestive system article is a stub.

You can help Wikipedia by expanding it.